<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./lib/vue.min.js"></script>
</head>
<body>
    <div id="app">
        <counter></counter>
        <hr>
        <counter></counter>
        <hr>
        <counter></counter>

    </div>
    
    <template id = "tmpl">
        <div>
            <input type="button" value="+1" @click = "increment">
            <h3>{{ count }}</h3>
        </div>
    </template>
    <script>
        //这是一个计数器的组件，每当点击按钮，让data中的count值加1
        Vue.component("counter", {
            template: '#tmpl',
            data: function() {
                return {
                    count: 0
                }
            },
            methods: {
                increment() {
                    this.count += 1
                }
            }
        })

        var vm = new Vue({
            el:"#app",
            data:{},
            methods: {}
        })
    </script>
</body>
</html> 